To hear the great Johnny Cowell, there are videos on YouTube + you can buy the following CDS.
Discs re-issued by Counterpoint Records, January, 2016:
The Art of Johnny Cowell – Virtuoso Trumpet Favourites C$15. Buy 
Contents:
1. Cowell – Variations on Carnival of Venice (A Tribute to Harry James) 3:37
2. Cowell – Roller Coaster 2:12
3. Raphael Mendez (arr. Cowell) – La Virgin de la Macarena 4:14
4. Cowell – Marcella’s Waltz (Valse Brilliante) 5:28
5. Herman Bellstedt (arr. Cowell) – Napoli 4:48
6. Cowell – Playful Trumpets 3:17
7. W. A. Mozart (arr. Cowell) – “Alleluia” (Exultate Jubilate K.165) 2:37
8-11. G.P. Telemann – Concerto for Trumpet and Orchestra in D Major 9:39
12. Cowell – Lonely Trumpet 3:10
13. E. Satie (arr. Cowell) – Gymnopedie No. 3 2:41
14. Carmichael & Parrish (arr. Cowell) – Stardust 3:47
Tributes to famous Trumpeters – Johnny Cowell in live concert:
15. Cowell – Satchmo (Louis Armstrong) 1:55
16. arr. Herbert.L. Clarke – Carnival of Venice (Herbert Clarke) 1:43
17. Grigoras Dinicu – Hora Staccato (Doc Severinsen & Raphael Mendez) 1:22
18. James Monaco – You Made Me Love You (Harry James) 1:11
19. Vernon Duke – I Can’t Get Started (Al Hirt & Bunny Berigan) 1:42
20. N. Rimsky-Korsakov – Flight of the Bumblebee (Wynton Marsalis) 1:11
21. A. Vivaldi – Presto from Concerto in Ab Major (Maurice André) 1:28
22. Mikis Theodorakis – Theme from Zorba the Greek (Herb Alpert) 1:35
23. Cowell – Blood of the Brave Bull 2:11
24. Hermann Kornig (arr. Cowell) – Post Horn Gallop 1:45
25. Hermann Kornig (arr. Cowell) – Garden Hose Gallop 2:22
Johnny Cowell – Great Show Pieces for Trumpet and Orchestra C$15 Buy 
Contents:
1. J.B. Arban (arr. Cowell) – Carnival of Venice, Theme & Variations 7:38
G.F. Telemann – Concerto in D
2. I. Adagio 2:39
3. II. Allegro 2:03
4. III. Grave 2:48
5. IV. Finale (Allegro) 1:47
6. W. A. Mozart (arr. Cowell) – “Alleluia” (Exultate Jubilate K.165) 2:31
G.F. Handel – Concerto in G Minor
7. I. Grave 2:51
8. II. Allegro 1:45
9. III. Largo 3:43
10. IV. Finale (Allegro) 1:54
11. E. Satie (arr. Cowell) – Gymnopedie No. 3 2:36
T. Albinoni – Concerto in B Flat, Op. 7, No. 3
12. I. Allegro 2:54
13. II. Adagio 3:16
14. III. Finale (Allegro) 2:15
15. H. Bellstedt (arr. Cowell) – Napoli (Theme & Variations on Funiculi, Funicula) 4:42
J. Cowell – Concerto in E Minor for Trumpet & Orchestra
16. I. Introduction, Adagio and Allegro 7:53
17. II. Andante 4:43
18. III. Finale (Presto) 6.24